| /****************************************************************************** |
| * |
| * Copyright (C) 2010 - 2015 Xilinx, Inc. All rights reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * Use of the Software is limited solely to applications: |
| * (a) running on a Xilinx device, or |
| * (b) that interact with a Xilinx device through a bus or interconnect. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * XILINX BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF |
| * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| * |
| * Except as contained in this notice, the name of the Xilinx shall not be used |
| * in advertising or otherwise to promote the sale, use or other dealings in |
| * this Software without prior written authorization from Xilinx. |
| * |
| ******************************************************************************/ |
| /****************************************************************************/ |
| /** |
| * |
| * @file xdevcfg_intr.c |
| * @addtogroup devcfg_v3_3 |
| * @{ |
| * |
| * Contains the implementation of interrupt related functions of the XDcfg |
| * driver. |
| * |
| * <pre> |
| * MODIFICATION HISTORY: |
| * |
| * Ver Who Date Changes |
| * ----- --- -------- --------------------------------------------- |
| * 1.00a hvm 02/07/11 First release |
| * 2.01a nm 07/07/12 Updated the XDcfg_IntrClear function to directly |
| * set the mask instead of oring it with the |
| * value read from the interrupt status register |
| * </pre> |
| * |
| ******************************************************************************/ |
| |
| /***************************** Include Files *********************************/ |
| |
| #include "xdevcfg.h" |
| |
| /************************** Constant Definitions *****************************/ |
| |
| /**************************** Type Definitions *******************************/ |
| |
| /***************** Macros (Inline Functions) Definitions *********************/ |
| |
| /************************** Function Prototypes ******************************/ |
| |
| /************************** Variable Definitions *****************************/ |
| |
| /****************************************************************************/ |
| /** |
| * |
| * This function enables the specified interrupts in the device. |
| * |
| * @param InstancePtr is a pointer to the XDcfg instance. |
| * @param Mask is the bit-mask of the interrupts to be enabled. |
| * Bit positions of 1 will be enabled. Bit positions of 0 will |
| * keep the previous setting. This mask is formed by OR'ing |
| * XDCFG_INT_* bits defined in xdevcfg_hw.h. |
| * |
| * @return None. |
| * |
| * @note None. |
| * |
| *****************************************************************************/ |
| void XDcfg_IntrEnable(XDcfg *InstancePtr, u32 Mask) |
| { |
| u32 RegValue; |
| |
| /* |
| * Assert the arguments. |
| */ |
| Xil_AssertVoid(InstancePtr != NULL); |
| Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY); |
| |
| /* |
| * Enable the specified interrupts in the Interrupt Mask Register. |
| */ |
| RegValue = XDcfg_ReadReg(InstancePtr->Config.BaseAddr, |
| XDCFG_INT_MASK_OFFSET); |
| RegValue &= ~(Mask & XDCFG_IXR_ALL_MASK); |
| XDcfg_WriteReg(InstancePtr->Config.BaseAddr, |
| XDCFG_INT_MASK_OFFSET, |
| RegValue); |
| } |
| |
| |
| /****************************************************************************/ |
| /** |
| * |
| * This function disables the specified interrupts in the device. |
| * |
| * @param InstancePtr is a pointer to the XDcfg instance. |
| * @param Mask is the bit-mask of the interrupts to be disabled. |
| * Bit positions of 1 will be disabled. Bit positions of 0 will |
| * keep the previous setting. This mask is formed by OR'ing |
| * XDCFG_INT_* bits defined in xdevcfg_hw.h. |
| * |
| * @return None. |
| * |
| * @note None. |
| * |
| *****************************************************************************/ |
| void XDcfg_IntrDisable(XDcfg *InstancePtr, u32 Mask) |
| { |
| u32 RegValue; |
| |
| /* |
| * Assert the arguments. |
| */ |
| Xil_AssertVoid(InstancePtr != NULL); |
| Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY); |
| |
| /* |
| * Disable the specified interrupts in the Interrupt Mask Register. |
| */ |
| RegValue = XDcfg_ReadReg(InstancePtr->Config.BaseAddr, |
| XDCFG_INT_MASK_OFFSET); |
| RegValue |= (Mask & XDCFG_IXR_ALL_MASK); |
| XDcfg_WriteReg(InstancePtr->Config.BaseAddr, |
| XDCFG_INT_MASK_OFFSET, |
| RegValue); |
| } |
| /****************************************************************************/ |
| /** |
| * |
| * This function returns the enabled interrupts read from the Interrupt Mask |
| * Register. Use the XDCFG_INT_* constants defined in xdevcfg_hw.h |
| * to interpret the returned value. |
| * |
| * @param InstancePtr is a pointer to the XDcfg instance. |
| * |
| * @return A 32-bit value representing the contents of the IMR. |
| * |
| * @note None. |
| * |
| *****************************************************************************/ |
| u32 XDcfg_IntrGetEnabled(XDcfg *InstancePtr) |
| { |
| /* |
| * Assert the arguments. |
| */ |
| Xil_AssertNonvoid(InstancePtr != NULL); |
| Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY); |
| |
| /* |
| * Return the value read from the Interrupt Mask Register. |
| */ |
| return (~ XDcfg_ReadReg(InstancePtr->Config.BaseAddr, |
| XDCFG_INT_MASK_OFFSET)); |
| } |
| |
| /****************************************************************************/ |
| /** |
| * |
| * This function returns the interrupt status read from Interrupt Status |
| * Register. Use the XDCFG_INT_* constants defined in xdevcfg_hw.h |
| * to interpret the returned value. |
| * |
| * @param InstancePtr is a pointer to the XDcfg instance. |
| * |
| * @return A 32-bit value representing the contents of the Interrupt |
| * Status register. |
| * |
| * @note None. |
| * |
| *****************************************************************************/ |
| u32 XDcfg_IntrGetStatus(XDcfg *InstancePtr) |
| { |
| /* |
| * Assert the arguments. |
| */ |
| Xil_AssertNonvoid(InstancePtr != NULL); |
| Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY); |
| |
| /* |
| * Return the value read from the Interrupt Status register. |
| */ |
| return XDcfg_ReadReg(InstancePtr->Config.BaseAddr, |
| XDCFG_INT_STS_OFFSET); |
| } |
| |
| /****************************************************************************/ |
| /** |
| * |
| * This function clears the specified interrupts in the Interrupt Status |
| * Register. |
| * |
| * @param InstancePtr is a pointer to the XDcfg instance. |
| * @param Mask is the bit-mask of the interrupts to be cleared. |
| * Bit positions of 1 will be cleared. Bit positions of 0 will not |
| * change the previous interrupt status. This mask is formed by |
| * OR'ing XDCFG_INT_* bits which are defined in xdevcfg_hw.h. |
| * |
| * @return None. |
| * |
| * @note None. |
| * |
| *****************************************************************************/ |
| void XDcfg_IntrClear(XDcfg *InstancePtr, u32 Mask) |
| { |
| /* |
| * Assert the arguments. |
| */ |
| Xil_AssertVoid(InstancePtr != NULL); |
| Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY); |
| |
| XDcfg_WriteReg(InstancePtr->Config.BaseAddr, |
| XDCFG_INT_STS_OFFSET, |
| Mask); |
| |
| } |
| |
| /*****************************************************************************/ |
| /** |
| * The interrupt handler for the Device Config Interface. |
| * |
| * Events are signaled to upper layer for proper handling. |
| * |
| * |
| * @param InstancePtr is a pointer to the XDcfg instance. |
| * |
| * @return None. |
| * |
| * @note None. |
| * |
| ****************************************************************************/ |
| void XDcfg_InterruptHandler(XDcfg *InstancePtr) |
| { |
| u32 IntrStatusReg; |
| |
| /* |
| * Assert validates the input arguments. |
| */ |
| Xil_AssertVoid(InstancePtr != NULL); |
| Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY); |
| |
| /* |
| * Read the Interrupt status register. |
| */ |
| IntrStatusReg = XDcfg_ReadReg(InstancePtr->Config.BaseAddr, |
| XDCFG_INT_STS_OFFSET); |
| |
| /* |
| * Write the status back to clear the interrupts so that no |
| * subsequent interrupts are missed while processing this interrupt. |
| * This also does the DMA acknowledgment automatically. |
| */ |
| XDcfg_WriteReg(InstancePtr->Config.BaseAddr, |
| XDCFG_INT_STS_OFFSET, IntrStatusReg); |
| |
| /* |
| * Signal application that there are events to handle. |
| */ |
| InstancePtr->StatusHandler(InstancePtr->CallBackRef, |
| IntrStatusReg); |
| |
| } |
| |
| /****************************************************************************/ |
| /** |
| * |
| * This function sets the handler that will be called when an event (interrupt) |
| * occurs that needs application's attention. |
| * |
| * @param InstancePtr is a pointer to the XDcfg instance |
| * @param CallBackFunc is the address of the callback function. |
| * @param CallBackRef is a user data item that will be passed to the |
| * callback function when it is invoked. |
| * |
| * @return None. |
| * |
| * @note None. |
| * |
| * |
| *****************************************************************************/ |
| void XDcfg_SetHandler(XDcfg *InstancePtr, void *CallBackFunc, |
| void *CallBackRef) |
| { |
| /* |
| * Asserts validate the input arguments |
| * CallBackRef not checked, no way to know what is valid |
| */ |
| Xil_AssertVoid(InstancePtr != NULL); |
| Xil_AssertVoid(CallBackFunc != NULL); |
| Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY); |
| |
| InstancePtr->StatusHandler = (XDcfg_IntrHandler) CallBackFunc; |
| InstancePtr->CallBackRef = CallBackRef; |
| } |
| /** @} */ |